Meanwhile, new entrant on the social media scene - Vizify! I just got my invitation and set up an account. Click on the image here and you should be able to see my page. Let me know your thoughts.
I am also doing an article for an online mag about Vizify and how that affects the social media playing field, if it is useful or not and how you see it affecting social media overall, and at the user level. So if you have any inputs to share, just mail me on firstname.lastname@example.org and who knows, maybe I will use your quote and send some reader love your way :)